Machine for making acetylene-gas tips.



PATENTBD MAR.1 0, 1908. '0. s, STEWARD' & W. T; LOWRY. MACHINE FORMAKING AGBTYLBNE GAS ms.

APPLICATION IILEDIAP B. 18-. 1907.

a sums-511mm.- v

QSSTQWAQ WThQWm Al/omey No. 881,352. I

o. s. STEWARD & w. T. LOWRY.

MACHINE FOR MAKING AGETYLBNE GAS TIPS.-

APPLICATION FILED APR.18.1907. 4 I

3 SHEETS-SHEET 2.

Afta mey 1n: NORRIS PETGRs cm, wasmucnm. o. c.

PATENTED MAR.10, 190s.

waiyg c. s. 'STEWARD & W. T." L'OWRYQ MAGHINB'POR MAKING AGETYLEN'E GASTIPS.

I APPLICATION FILED APR. 18. 19 07- Af/omey PATENTED MAR. 10, 1908.

UNITED STATES PATENT OFFICE.

CLARENCE S. STEWARD AND WILLIAM T. LOWRY, OF CHATTANOOGA, TENNESSEE, AS-SIGNORS TO THE D. M. STEWARD MANUFACTURING COMPANY, OF CHATTANOOGA,

TENNESSEE.

MACHINE FOR MAKING ACETYLENE-GAS TIPS.

Specification of Letters Patent. A

Application filed April 18, 1907.

To all whom it may concern:

Be it known that we, CLARENCE S. STEW- ARD and WILLIAM T. LowRY,citizens of the United States, residing at Chattanooga, in the county ofHamilton and State of Tennessee, have invented certain new and usefulImrovements in Machines for Making Acetyene-Gas Tips; and we do herebydeclare the following to be afull, clear, and eXact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use same, reference being had to theaccompanying-drawings, and to the letters and figures of referencemarked thereon, which form a part of this s ecification.

This invention re ates to new and useful improvements in apparatus formaking acetylene gas tips, and comprises means for holding the tip whileforming an elongated spreading or ressure chamber in the end wall of theshell 0 the tip, and in the provision of means for forming a minute slotthrough the outer end of the tip into the spreading or pressure chamberand at right angles thereto.

The invention consists in various details of construction andcombinations and arrangements of parts which will be hereinafter fullydescribed and then specifically defined in the appended claims.

Our invention is illustrated in the accompanying drawings, in whichFigure 1 is a side elevation of the apparatus. Fig. 2 is a top planview. Fig. 3 is a sectional view taken on line 33 of Fig. 2, showingparts of the apparatus in elevation. Fig. 4 is an enlarged detail viewin elevation of the tip holding chuck. Fig. 5 is a sectional view takenon line 55 of Fig. 4. Fig, 6 is a detail perspective view of a tip whichis to be chambered and slotted by the provision of our apparatus. Fig. 7is an end view of the bottom of the tip. Fig. 8 is a similar viewshowing two holes formed in the end of the chambered portion of the tip.Fig. 9 is a detail end view showing the s reading chamber which has beenformed wit in the end wall of the cylindrical chambered portion of thetip, and Fig. 10 is a side elevation showing a slight modification ofmeans for slotting the tip in which a drill is utilized instead of asaw.

Reference now being had to the details of I the drawings by letter, Adesignates the base of the apparatus having a standard 13 rising atright angles therefrom, and projecting laterally from said-standard is abracket arm 0, the end of which is yoke-shaped and supports a verticallymounted rotatable mandrel D, said mandrel being held in said yoke andprovided with a pulley E whereby a rotary movement may be imparted bybelted connection with any source or supply of power for rotating themandrel. Fixed to said mandrel and at right angles thereto is a saw Fwhich is held to the mandrel by means of a nut H.

K designates a block rising from the base A and has journaled therein ascrew shaft K with a handle K fixed to the end thereof. Mounted u on andhaving dove-tailed connection wit said block is-a carriage N providedwith a threaded aperture designed to receive the threads of the shaft K,whereby said carriage may be moved backward and forward as the screwshaft K is moved in one direction or the other. Mounted upon thecarriage N is a second carriage 0 having an angled portion which isprovided with an a erture to receive the adjusting screw Q w ich isswiveled to said carriage O, and Q.

is a hand wheel which is fixed to the screw Q. Said adjusting screw Qengages the threads.

formed in the wall of a hole formed in the carriage 0, whereby as saidscrew Q is turned in one direction or the other, the carriage 0 may havea movement at right angles to the movement of the carriage N.

Rising from the carriage N and integral therewith is a post N which isguided in a slot formed in the carriage O and carries a set-screw Nhaving a jam nut N thereon, said set-screw being provided for thepurpose of limiting the movement of the carriage'N in one direction,while its movement in the opposite direction is regulated by means of aset-screw A which is mounted in a threaded aperture formed in the post Aa jam nut A being mounted upon the screw A in order to hold the same inan adjusted position. Mounted in the carriage O is a screw J whichsupports the swiveled chuck I, detail views of which are shown in Figs.4 and 5 of the drawings. Said chuck is provided with a central aperture,the wall'of which is slightly tapering, and is adapted to receive andfrictionally hold a tip I to be operated upon by our improved apparatusfor the purpose of forming a spreading or pressure chamber Within thetip and at the same time holding the tip to be slotted through its endat right angles to the length of the spreading chamber. Said chuck has alateral projection I whereby the chuck may be swung from the positionshown in solid lines in Fig. 4 to that illustrated by dotted lines inthe same figure, whereby a rotary movement may be given to the tip sothat the slot in the end thereof will be made at exact right angles tothe length of the spreading chamber within the tip. Adjusting screws Iand I are mounted in threaded lugs projecting from the casing in whichthe chuck is mounted, and serve as stops to limit the throw of theprojection I in one direction or the other.

Mounted upon a standard It, which rises from the base of the apparatus,is a yoke R, the shank R of which is held by means of a set-screw R tosaid standard R, and S designates a longitudinally movable rotatableshaft which is mounted in suitable bearings in the arms of the yoke R,and T designates a pulley which is provided with a setscrew T adapted tohold the same in an adjusted position upon the shaft S, whereby thelongitudinal movement of said shaft may be regulated. One end of saidshaft S carries a socket member S in which a drill S is adapted to beheld, and the opposite end of the shaft is provided with a handle Swhereby said shaft may be given a longitudinal move ment in onedirection or the other.

Mounted in a suitable cross head W, shown clearly in Fig. 2 of thedrawings, is a carriage WV carrying a standard W shown in side elevationin Fig. 3 of the drawings,

which-standard carries a tool I at right angles thereto, said tool beingheld in an aperture in the standard by means of a setscrew WV. It willbe noted upon reference to Fig. 2 of the drawings that said tool WV hasa serrated end whereby as the carriage to which the tool is fixed isreciprocated rapidly, a grating or rasping effect will be produced upona tip held in the ath of said serrated end. Said carriage V has a pitmanL pivotally connected thereto, the other end of which is connected to acam shaft L which may be driven by belted connection with a pulley LSaid cam shaft L is mounted in suitable bearings L upon the base of theapparatus.

In Fig. 10 of the drawings, we have illustrated a slight modification ofa detail of our invention, showing a vertically rotating drill V whichis mounted upon a mandrel V held upon a yoke V said mandrel beingspring-pressed and driven by means of belted connection with the pulleyV In the modified form shown in Fig. 10 of the drawings, the mandrel isshown as being mounted in a suitable yoke, and this modified form may besubstituted for the saw illustrated in Fig. 1 of the drawings, ifdesired, for the purpose of forming the transverse slot in the outer endof the tip. By pushing down upon the mandrel V under the tension of thespring thereon, when the tip is brought into the proper position so thatas the drill is depressed it will bore a hole through the roof of thespreading chamber at right angles thereto, thereby forming an exit forthe gas.

In operation, the tip to be chambered and slotted is inserted in thechuck with the open cylindrical shell portion toward the drill S The twocarriages, one superimposed upon the other and having move ments atright angles to each other, are so adjusted that when the drill S whichfirst shall have been given a rotary movement and fed forward toward thetip, will cause a hole to be drilled in the roof of the cylindricalchambered portion of the tip, the wall of which hole forms one end ofthe spreading or pressure chamber. In order to regulate the depth atwhich it is desired to have the holes, designated in Fig. 8 by letter M,cut, the setscrews A maybe moved nearer to or farther from the carriageO and also the movement of the shaft S which carries the drill S may belimited by the adjustment of the pulley 'l thereon which is held in anadjusted position by means of a set-screw T. After the formation of thetwo holes M in the end of the roof of the cylindrical chambered portionof the tip, as shown in Fig. 8 of the drawings, the drill is withdrawnfrom the tip, the earriage N is moved horizontally to bring the tipopposite and centrally in alinement with the reciprocating rasping toolW, and the carriage O is moved forward, being adjusted so that thespreading chamber may be cut out to the proper depth. As the raspingtool is given a rapid lateral movement in a horizontal plane, theoperator, by turning the adjusting screw gradually, may regulate thefeeding forward of the tip and also regulate the rapidity with which theportion of the tip intermediate said holes may be cut away. After thespreading or pressure chamber has been cut to its proper depth, formingan elongated chamber, as illustrated in Fig. 9 of the drawings, thecarriage O is drawn back free from the rasping tool and the chuck isgiven a rotary movement in order to bring the tip into proper positionto receive the transverse slot in its top at right angles to the lengthof the spreading chamber. Said slot is formed preferably by means of thesaw F which is caused to rotate in a horizontal plane against the top ofthe tip, and by the movement of the carriage 0 upon which the tip ismounted, toward the saw, the depth at which the slot is cut may beregulated by the screw'h which serves as a stop. This being adjusted,the carriage N is given a longitudinal movement, bringing the tip intocontact with the saw, and as the carriage N is driven forward andbackward, the slot will be formed in the top of the tip cutting throughthe roof of the spreading or pressurev chamber at right angles to thelength of the latter.

In Fig. 10 of the drawings, we have shown a slight modification of adetail of our invention, in which the saw may be dispensed with, ifdesired, and a drill V provided for drilling a hole transversely throughthe tip in which the slot is formed so as to intersect and cut throughthe roof'of the spreadin chamber, thereby forming a slot which will alsobe at right angles with the length of the spreading chamber. 1

From the foregoing, it will be noted that by the provision of anapparatus as shown and described, a simple and efficient mechanism'isafforded for forming an elongated spreading chamber within a tip, with aslot as a gas orifice at right angles to the length of the spreadingchamber. By the manner of holding the tip and the adjustments of themachine, it will be observed that the chamber and the slot may beaccurately formed in order to produce a tip from which the best resultsmay be obtained.

What we claim is 1. A mechanism for making acetylene gas burner tips,comprising a tip older adapted to have an angular movement, a movablecarriage upon which said holder is mounted, a movable rasping membermounted at right angles to the line of travel of said carriage andagainst which member a tip, engaged by said holder, is designed to bemoved whereby an elongated chamber may be formed within the tip, andmeans positioned in the path of the tip for cutting a slot in the endand intersecting at right angles the chamber within the latter, as setforth.

2. A mechanism for makin acetylene gas burner tips, comprising a tipolder adapted to have an angular movement, a movable carriage upon whichsaid holder is mounted, a reciprocating rasping member mounted at rightangles tow the line of travel of said carriage and against which membera tip fixed to said holder is designed to be moved Whereby an elongatedchamber may be formed within the tip, and means positioned in the pathof the tip for cutting. a slot in the end intersecting at ri ht anglesthe chamber therein, as set fort 3. A mechanism for making acetylene gasburner tips, comprising a tip holder adapted to have an angularmovement, a movable carriage upon which said holder is mounted, areciprocating rasping member mounted at right angles to the line oftravel of said carriage and against which member a tip adjustably heldby said holder is adapted to be moved, whereby an elongated chamber maybe formed Within the tip, and means positioned in the path of the tipfor cutting a slot in the end intersecting at right angles the chamberwithin the latter, as set forth.

4. A mechanism for making acetylene gas burner tips, comprising a tipholder adapted to have an angular movement, a movable carriage uponwhich said holder is mounted, a rotatable drill, means for causing thelatter to be actuated at right angles, to the movement of said carriageand in the path of the tip, a movable rasping member mounted at rightangles to the line of travel of said carriage and against which the tipis adapted to contact as said member is reciprocated, whereby anelongated member may be formed within the tip and intermediate the holesformed therein by said drill, and means positioned in the path of thetip for cuttin a slot in the end intersecting at right ang es thechamber within the tip, as set forth.

5. A mechanism for makin acetylene gas burner tips, comprising a tipholder adapted to have an angular movement, a movable carriage uponwhich said holder is mounted, a rotatable drill movable in a plane atright angles to the movement of said carriage, a movable rasping membermounted at right angles to the line of travel of said carriage andagainst which the tip is adapted to contact as said member isreciprocated, whereby an elongated member may be formed within the tipand-intermediate the holes formed therein by said drill, a rotatable sawmounted, in the path of the end of the tip engaged by said holder anddesigned to cut a slot in the end of the tip intermediate the spreadingchamber therein, as set forth.

6. A mechanism for making acetylene gas burner tips, comprising amovable carriage, a tip holder having an adjustable movement independentof the carriage and at right angls'thereto and adapted to hold a tip andallow the same to have a limited angular movement, a movable raspingmember positioned in the path of said tip engaged by said holder,whereby a chamber may be formed within the tip, and means positioned inthe path of the tip for cutting a slot in the end intersecting at rightangles the chamber within the latter, as set forth.

7. A mechanism for making acetylene gas burner tips, comprising amovable carriage, an adjustable tip holder designed to have an angularmovement and adapted to engage a tip, a rotatable drill, means forlimiting the movement of said holder toward said drill, a reciprocatingcarriage, a rasping member fixed thereto and adapted to contact with atip engaged by the holder to form a chamber within the tip, and meansfor slotting the end of the tip intersecting at right angles saidchamber, as set forth.

8. A mechanism for making acetylene gas burner tips, comprising amovable carriage, an adjustable tip holder designed to have an angularmovement and adapted to engage a tip, a rotatable drill, means forlimiting the movement of said holder toward said drill, a reciprocatingcarriage, a rasping member fixed thereto and adapted to contact With aour signatures in the presence of two Wittip engaged by the holder toform a chamber nesses. Within the tip, a rotatable saw mounted in aCLARENCE S. STEVVARD. plane at r1ght an les to the movement of the r 7carriage and designed to cut a slot in the end WILLIAM LOXVRX' of thetip intersecting at right angles the Witnesses:

chamber therein, at set forth. A. E. VVOODY,

In testimony whereof We hereunto a'l'I'iX JNO. H. VVOODY.

